4 is a perfect square because 2 x 2 =

The first term, 4x2, is the square of 2x, and the last term, 36, is the square of 6 (or, in this case, –6, if this is a perfect square).

Step-by-step explanation:

The first term, 4x2, is the square of 2x, and the last term, 36, is the square of 6 (or, in this case, –6, if this is a perfect square). However, looking back at the original quadratic, it had a middle term of –25x, and this does not match what the pattern requires. So: this is not a perfect square trinomial.

answer is:

1.75 pounds

-4

step-by-step explanation:

(-4+8)=-(4-8)=-8+4=-4